I just figured out today how to redeem the credit. If you saw the success screen like I showed in my screenshot, and you got the credit. You have to shop in this particular section of Amazon. Go here: https://www.amazon.com/b?ie=UTF8&node=19351382011
When you go to cart after adding something from that four-star store, the discount will reflect. See this screenshot of my cart: https://pic8.co/sh/24zIib.png
I never did receive an email telling me anything about these credits. I'm glad I did my research again on it today.
(post is archived)